of thousands of roman catholics are at the vatican this morning for benedict's last general audience as pope. >> the historic transition before benedict's formal resignation tomorrow. it's wednesday, february 27th. >> from abc news, this is "world news now." >> and good morning, everybody. i'm diana perez. >> and i'm rob nelson. history is in the making at st. peter's square as the pope officially retires tomorrow and that's coming up in our top story. on top of that, we'll turn to northern texas where a 16-year-old driver with a stuck accelerator pedal managed to avoid crash after crash. the panicky situation with speeds up to 100 miles per hour. lucky is an understatement. >> wow. >>> also this morning, the debate over working at the office or working from home. after a surprising order from the top corporate executive. where are you the most productive? >> would you do this show from home if you could? >> in a heartbeat. actually, i do live here. >> feels like we do. >> we're here every night. >>> coming up later this half hour, chris brown and rihanna's relationship has been on and off.